Definition of magnetosphere
: a region of space surrounding a celestial object (such as a planet or star) that is dominated by the object's magnetic field so that charged particles are trapped in it
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Recent Examples of magnetosphere from the Web
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The new spacecraft is bristling with instruments meant to probe the planet’s magnetosphere, polar regions, composition and interior structure.
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Solar flares are generally followed by coronal mass ejections (CME) that create a solar wind pushing ionized particles away from the sun where they can be caught by the Earth’s magnetosphere.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnetosphere'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1959
First Known Use of magnetosphere
1959
Learn More about magnetosphere
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Britannica English: Translation of magnetosphere for Arabic speakers Britannica.com: Encyclopedia article about magnetosphere
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